Home / 212,828.68-319,243.02-72,588.52

Finding the Fourth Proportional to 212,828.68, 319,243.02 and 72,588.52

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Solution

The fourth proportional to 212,828.68, 319,243.02 and 72,588.52 is: 108,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,828.68 : 319,243.02 = 72,588.52 : x
  2. Step 2: Convert to fraction form
    212,828.68/319,243.02 = 72,588.52/x
  3. Step 3: Cross multiply
    212,828.68x = 319,243.02 × 72,588.52
  4. Step 4: Simplify right side
    212,828.68x = 23,173,378,342.13
  5. Step 5: Solve for x
    x = 23,173,378,342.13/212,828.68
  6. Step 6: Final answer
    x = 108,882.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.